Powder mixing and incorporating mill.



No. 660,373. Patented Oct. 23, I900.

F. A. HALSEY.

POWDER MIXING AND INCOBPORATING HILL.

(Ap limionmed Apr. 11, 1900. (No Model.) 2 Shedt's-Sha et l.

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No. 660,373. 1 Patented not. 23', I900.

F. A. HALSEY.

POWDER MIXING AND INCORPORATING MILL (Application flled-Apn'll, 1900.

' (No Model.) 2 Sheets-Shani 2..

UNITED STATES PATENT OFFICE.

FRANCIS A. HALSEY, OF SAN RAFAEL, CALIFORNIA.

POWDER MIXING AND INCORPORATING MILL.

SPECIFICATION forming part of Letters Patent No. 660,373, dated October 23, 1900.

Application filed April 11, 1900. Serial'Na. 12,421. the model.)

To aZZ whom it Wtay concern:

Be it known that I, FRANCIS A. HALSEY, a citizen of the United States, residing at San Rafael, county of Marin, State of California, have invented an Improvement in Powder Mixing and Incorporating Mills; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to improvements in mills designed to mix the ingredients of ex plosive powders and like compounds.

It consists in the combination, with an annular bed-plate or mixing-pan having vertical runners and means by which they are caused to travel around upon the bed-plate, of devices by which the runner-supports may be adjusted with relation to the bed-plate, means by which either of the runners can be raised independently of the other, and means for preventing the runners coming into actual contact with the bed-plate.

It also comprises, in conjunction with scrapers or plows, by which the material is continually thrown into the path of the runners, a series of cutters traveling in unison therewith, by the operation of whichthe powder is broken and granulated.

My invention also comprises details of construction, which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a vertical section. Fig. 2 is a plan. Fig. 3 is a front elevation of the circular cutters. Fig. 4 is a side elevation of the same. Fig. 5 is an enlarged detail showing the inner end of one of the arms 10 and its conneotions.

A is the bed-plate, the outer portion of which forms anannular channel. This bed plate or pan is here shown as mounted upon pillars 2, of which there are a sufficient number beneath the annular channel to provide a solid support therefor. Through the center of the bed-plate extends a vertical shaft 3, the lower end of which is supported in a step 4. Surrounding this shaft and also extending up through the center of the bedplate is a sleeve 5, upon the lower end of which is keyed the bevel-gear 6. This is engaged by a bevel-pinion 7 ,fixed upon the horizontal shaft 8, and through these power is derived to revolve the sleeve and its attachments. Above the bed-plate is a driver or carrier 9, fixed to the sleeve and turnable with it. Fulcrumed upon each side of the driver are the arms 10, and upon the outer ends of these arms are spindles upon which the runners 11 revolve. These runners are in the form of heavy chilled-iron rollers, and the surfaces are turned or polished, so that there will be little adherence to them of the paste ofwhich the powder is made. ner ends of the arms 10 have upwardly-projecting lugs, as at 12, and these lugs engage with corresponding downwardly-projecting shoulders 13 upon the yoke 9 and serve when the parts are adjusted to hold the runners a little above the bottom of the pan, the object of this being to prevent them from dropping upon the pan-bottom if they should be raised by running over some substance sufficiently hard, and from them they might drop if not thus suspended and cause the ignition of particles of powder beneath them.

The upper end of the vertical shaft 3 is screw-threaded, and upon it is turnable a nut 14, having a suitable hand-wheel15 by which it may be operated. This nut is grooved or channeled around its periphery, and a ring 16 is fitted to the channel. From this ring hangers 17 extend downward, passing through a hub 18, through which the shaft 3passes, and the hub has radially-projecting arms 19. The hangers 17 extend down and screw into the top of the driver 9, and between the yoke 9 and the hub 18 are sleeves 20, and the hub 18, resting upon their upper ends, serves to support this hub and its arms around the shaft 3. Through the outer ends of the arms 19 extend the rods 21, the lower ends of which are pivoted to lugs 22 on the tops of the arms 10. The upper ends of the arms 21 are screw threaded, and nuts having hand-wheels 23 are turnable upon these threads. As the nuts are supported from the arms 19, it will be seen that by turning them the arms may be moved up or down through the nuts, and this will raise or lower the armslO, and with them the runners 11, which'are journaled upon their outer ends. This allows of an independent raising or adjustment of each runner and is also independent of the main adjustment of all the runners simultaneously, which is effected by the movement of the nut 14 upon The inwill be seen that by turning the hand-wheel 15 the nut may be caused to travel upon the vertical shaft 3, so as to raise and lower the structure which carries the runners, and the runners may thus be adjusted so as to travel sufficiently near the bottom of the annular pan without being in actual contact with it. If they pass over anyhard lumps,- which would tend to arrest them, they will rise above the fulcrum-points of the arm 10, yielding in this manner to pass over such obstructions, and will then fall back to their nornal positions, the lugs 12 13 and the rods 21 acting as stops to prevent their dropping into actual contact with the bed-plate below.

- The threads upon the shaft 3 are left-handed, so that when the apparatus has been adjusted and is at work the shaft, the sleeve, the driver, and the runners all being driven in unison, the hand-wheel l5 and nut are also turned with them; but if it is desired to raise the runners While the machine is in operation, as the parts revolve to the right it is only necessary to take hold of the rim of the handwheel and it will thus be turned, and with it the n at 14:,which, turning upon the left screwthreads, will raise all parts which are suspended from the nut, including the runners. 26 are plows-carried by radial arms from the central driving-yoke and acting to throw the material from the sides into the path of the runners. Behind the plowsare carried the cutters or disintegrators 27, which are here shown in the form of disks mounted upon a shaft, with washers to regulate the distance between them. These disks are cut into radial projecting arms, the ends of which are so dispored with relation to those of each of the adjacent disks that following the ends of the arms around they will be spirally disposed-that is, starting with one of the arms of an outside disk the corresponding arm of the next disk will be a little in advanceof the first one, and so on through the whole series. There may be as many of these arms of each disk as desired. Eightis a very convenient number for the purpose, and when these arms are moved over the surface of the material in the trough beneath, after it has been properly mixed and incorporated by the runners, they will roll upon the material and act to break it into grains and small particles. The object in using these independent arms for the purpose instead of cutters or disks is to prevent the moist and somewhat pasty mass from being clogged in this part of the device, the elasticity and movement of the aim being sufficient to free them, while breaking up and granulating the mass very completely. The shaft which carries these radial-armed disks is journaled in arms 28, the opposite ends of which are adjustably fixed to a shaft 29, and this is supported in hangers 30, fixed to the radial plow-carrying arm 31. a

In order to exert a sufficient pressure upon the cutters or disintegrators, I have shown an arm 32, having one end fixed to the shaft 29, and upon this arm is slidable a weight 33, which may be adjusted at any desired point. The action of this weight upon the end of the lever-arm 32 and through the shaft 29 and the hangers or arms 28 causes a sufficient pressure upon the cutters 27 to insure their pulveriz'ing or granulating the powder over which they pass.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'- 1. In a powder-mill and in combination with a bed-plate having an annular periph eral channel and runners mounted upon radial arms and adapted to travel in said chan- 2. The combination in a powder-mill of a bed-plate having an annular peripheral channel, vertical runners adapted to travelin said channel, radial arms upon the outer ends of which the runners are journaled, a driver to which the inner ends of said arms are pivoted, a centrally-disposed sleeve to which said driver is fixed and through which power is communicated to drive the driver and runners, a central vertical shaft with a supporting-step at the lower end, said shaft keyed to the sleeve and having its upper end screwthreaded, a nut fitting said screw-threads and hangers connecting the nut with the driver.

3. In a powder-mill and in combination with the bed-plate, runners, radial arms and a central driver to which they are hinged, a shaft, a supporting-step at the bottom, said shaft extending up through the driver having screw-threads at the upper end, a nut turnable upon said screw-threads and a ring carried by the nut, and hangers extending downwardly from the ring and connecting with the driver.

4. The combination in a powdermixing mill of an annularly-channeled bed, runners journaled upon the outer ends of radial arms adapted to travel in the channel, a driver fixed to the vertical driving shaft having shoulders formed thereon, pivots by which the inner ends of the runner-arms are connected with the driver, and lugs upon the inner ends of said arms engageable with the shoulders of the driver to limit the depression of the outer ends of the arms.

5. The combination in a powder-mill of an annularly-channeled bed-plate, runners journaled upon the outer ends of radial arms and adapted to travel in the channel, a driver fixed to the driving-shaft to which the inner ends of the runner-arms are horizontally pivoted, a vertical central shaft having a stepsupport at the bott-oin,screw-threads upon the upper end, a nut turnable upon saidscrewthreads, a ring carried by the nut, hangers extending downwardly from the nut and having their lower ends fixed in the driver, a hub fitting the screw-stem having radial arms, through which hub the hangers pass, and sleeves surrounding the hangers between the driver and the hub, and serving to support the latter.

6. The combination in a powder-mill of the annularly channeled bed, runners carried upon radial arms hinged to a central driver, a vertical central shaft screw-threaded at the upper end, a nut turnable upon said screwthreads with an actuating hand-wheel, hangers supported from said nut, extending downwardly having their lower ends fixed to the driver, a hub supported intermediate of the driver and nut and having radial arms, suspending-rods passing through said arms pivotally connected with the runner-arms at the bottom and having nuts turnable upon their screw-threaded upper ends whereby the runner-arms may be independently turned up- Wardly about their hinge-joints.

7. In combination in a powder mixing and incorporating machine, an annularly-channeled bed, radially-journaled runners, and means for revolving them within the bed, and lug-and-shoulder connections between the runner-arms and driver adapted to hold the runners out of direct contact with the bed, plows carried in unison with and behind the runners, and cutters or disintegrators mounted to travel in rear of the plows.

8. The combination of an annular channeled bed, radially-journaled runners and a driver and connections for revolving the same, lug-and-shoulder connections between the inner ends of the runner-arms and the driver adapted to hold the runners out of direct contact with the bed, a radial arm connected with the driver, plows supported from said last-named arm and traveling behind the runners, and disintegrators consisting of central disks or hubs having radial arms and means for connecting the disintegrators with the radial plow-carrying arm.

9. In a powder mixing and incorporating machine, an annularly-channeled bed, runners and plows and mechanism by which they are caused to travel around said bed, means for holding the runner out of direct contact with the bed, disintegrators adapted to travel with the runners and consisting of a. series of disks or hubs mounted side by side upon a rovoluble shaft having radial arms, the ends of which are disposed in spiral lines from side to side of the disintegrator, arms in which the shaft is journaled and turnable,'a shaft to one end of which the opposite ends of said arms are adj ustably fixed, hangers connected with the propelling mechanism in which said shaft is journaled, a lever-arm fixed upon the shaft having a slidable adjustable weight whereby a varying pressure may be brought upon the disintegrating arms as they pass over the material on the bed.

In Witness whereof I have hereunto set my hand. 1

FRANCIS A. HALSEY.

Witnesses:

S. H. NOURSE, JESSIE O. BRODIE. 

